L322 3.0 td6 gearbox problems

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MrMatt83

MrMatt83

New Member
Posts
6
Location
Tyne And Wear
Hello all. I am new to the forum and looking for a bit of advice regarding the transmission in my newly acquired RR L322 3.0 TD6.

So the issue is if I pull away from a start using a fair bit of throttle and accelerate swiftly it pulls normally and changes up through the gears as it should. But if I pull off and drive normally the transmission seems to be slipping, the revs rise and stay up and the speed increase slowly abit like a cvt transmission.

I can hear it change gears but revs only drop a little. If you let off the throttle the revs drop to normal then Increase again as soon as you touch the throttle.

But once up to main road speeds about 50+ mph and I guess it's in top gear it drives fine and you can accelerate without any abnormal increase in revs.

I will add at this point that there is a receipt from 2k mile ago stating it's had a remanufactured torque converter and new frictions and seals. But there is no mention of any valve body work.

Could this just be down to a worn valve body?

Thanks in advance for any advice that is offered.
 
Thank you for taking the time to read and reply. I probably should of mentioned that I have already checked the transmission fluid. Had car up in air with transmission warmed. Fluid was 48c when I check. Engine running cycle from park to drive pausing in each for a few seconds. No fluid came out initially but when I tried to top it up it only a tiny bit before it ran out so I guess it was near enough.
 
MrMatt83 said:
Thank you for taking the time to read and reply. I probably should of mentioned that I have already checked the transmission fluid. Had car up in air with transmission warmed. Fluid was 48c when I check. Engine running cycle from park to drive pausing in each for a few seconds. No fluid came out initially but when I tried to top it up it only a tiny bit before it ran out so I guess it was near enough.
Click to expand...
OK, what mileage has the car done? The GM box rarely lasts much longer than 80/100K miles. I'm not an expert on that box but it sounds like the torque converter lock up clutch to me. The valve blocks are made of cheese. @Bemble is the man who would know.
 
It's now done 164.5k miles. According to the receipt the gearbox had new seals and friction plates and a remanufactured torque converter was fitted 2k mile ago. No mention on receipt of any valve body work being done.

I find it strange It's perfect when giving it large but not under normal pottering around conditions.
 
Yes I agree it does seem a waste of time not to change oil cooler and check the valve body. The box seems to have had a partial rebuild as it's allegedly had new clutch friction plates and new seals as well as a remanufactured torque converter. But no mention of oil cooler or valve body on the receipt.

I guess I'm just trying to work out if I would get away with having the valve body tested and rebuilt and fitting a new oil cooler and filter.
 
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